/*
 * jQuery Color Animations
 * Copyright 2007 John Resig
 * Released under the MIT and GPL licenses.
 */

(function(jQuery){

  // We override the animation for all of these color styles
  jQuery.each(['backgroundColor', 'borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor', 'color', 'outlineColor'], function(i,attr){
    jQuery.fx.step[attr] = function(fx){
      if ( fx.state == 0 ) {
        fx.start = getColor( fx.elem, attr );
        fx.end = getRGB( fx.end );
      }

      fx.elem.style[attr] = "rgb(" + [
        Math.max(Math.min( parseInt((fx.pos * (fx.end[0] - fx.start[0])) + fx.start[0]), 255), 0),
        Math.max(Math.min( parseInt((fx.pos * (fx.end[1] - fx.start[1])) + fx.start[1]), 255), 0),
        Math.max(Math.min( parseInt((fx.pos * (fx.end[2] - fx.start[2])) + fx.start[2]), 255), 0)
      ].join(",") + ")";
    }
  });

  // Color Conversion functions from highlightFade
  // By Blair Mitchelmore
  // http://jquery.offput.ca/highlightFade/

  // Parse strings looking for color tuples [255,255,255]
  function getRGB(color) {
    var result;

    // Check if we're already dealing with an array of colors
    if ( color && color.constructor == Array && color.length == 3 )
      return color;

    // Look for rgb(num,num,num)
    if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color))
      return [parseInt(result[1]), parseInt(result[2]), parseInt(result[3])];

    // Look for rgb(num%,num%,num%)
    if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color))
      return [parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55];

    // Look for #a0b1c2
    if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color))
      return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)];

    // Look for #fff
    if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color))
      return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)];

    // Otherwise, we're most likely dealing with a named color
    return colors[jQuery.trim(color).toLowerCase()];
  }
  
  function getColor(elem, attr) {
    var color;

    do {
      color = jQuery.curCSS(elem, attr);

      // Keep going until we find an element that has color, or we hit the body
      if ( color != '' && color != 'transparent' || jQuery.nodeName(elem, "body") )
        break; 

      attr = "backgroundColor";
    } while ( elem = elem.parentNode );

    return getRGB(color);
  };
  
  // Some named colors to work with
  // From Interface by Stefan Petre
  // http://interface.eyecon.ro/

  var colors = {
    aqua:[0,255,255],
    azure:[240,255,255],
    beige:[245,245,220],
    black:[0,0,0],
    blue:[0,0,255],
    brown:[165,42,42],
    cyan:[0,255,255],
    darkblue:[0,0,139],
    darkcyan:[0,139,139],
    darkgrey:[169,169,169],
    darkgreen:[0,100,0],
    darkkhaki:[189,183,107],
    darkmagenta:[139,0,139],
    darkolivegreen:[85,107,47],
    darkorange:[255,140,0],
    darkorchid:[153,50,204],
    darkred:[139,0,0],
    darksalmon:[233,150,122],
    darkviolet:[148,0,211],
    fuchsia:[255,0,255],
    gold:[255,215,0],
    green:[0,128,0],
    indigo:[75,0,130],
    khaki:[240,230,140],
    lightblue:[173,216,230],
    lightcyan:[224,255,255],
    lightgreen:[144,238,144],
    lightgrey:[211,211,211],
    lightpink:[255,182,193],
    lightyellow:[255,255,224],
    lime:[0,255,0],
    magenta:[255,0,255],
    maroon:[128,0,0],
    navy:[0,0,128],
    olive:[128,128,0],
    orange:[255,165,0],
    pink:[255,192,203],
    purple:[128,0,128],
    violet:[128,0,128],
    red:[255,0,0],
    silver:[192,192,192],
    white:[255,255,255],
    yellow:[255,255,0]
  };
  
})(jQuery);